Pinking machine



- y 1944- I K. A. DOE HM 2,348,529

' I PINKING MACHINEWV Filed Nov. 15, 1942 9 Sheets-Sheet'l INVENTOR. A7494 A. 005-014.

WITNESS.

ATTORNEYS.

y 1944- K. A. DOEHM 2,348,529

PINKING MACHINE v Filed Nov.v 13, 1942 9 Sheets-Sheet 4 52 INVENTOR.

hA/PL A. DOE/4M.

ATTORNEYS.

May 9, 1944. Y DQEHM Y 2,348,529

' PINKING MACHINE F 'iled Nov. 15. 1942 9 Sheets-Sheet 5 INVENTOR.

5 6 ATTORNEYS.

1 MR1. A. DOEHM y K. A. DoE HM 2,348,529

' PINKING MACHINE i Filed Nov. 13, 1942 9 Sheets-Sheet 7 2 1's.! FIG..{& AW mn C INVENTOR.

K4 24 A. DOE/7914.

ENE Y6.

y 1944- K. A. DOEHM 2,348,529

' Y PINKING MACHINE r I Filed Nov. 13, 1942 9 sheet -sheet 8 I INVENTOR.. A3424 A. DOE/4M.

v I I wzrusss: 5% 7% ATTORNEYS May 9, 1944. K. A. DOEH-M 2,348,529

- PINKING MACHINE Filed Nov. 13, 1942 9 Sheets-Sheet 9 Era-.10.

' INVENTOR. A3491. A. DOEHM Patented May 9, 1944 PINKIN G MACHINE Karl A. Doehm, West New York, N. J., assignor to Samuel Briskman, New York, N. Y.

Application November 13, 1942, Serial No. 465,477

24 Claims. (Cl. 164-50) The present invention relates to machines for cutting sheet material and more particularly it relates to machines which cut'the material in such a manner as to leave an ornamental edge thereon.

Such machines are generally known as pink in machines, and it is one object of the invention to improve the construction and mode of operation of pinking machines and to provide such machines with a mechanism which will.

effect a better pinking operation than prior machines.

A feature of the present invention, consists in the provision, in a machine of the character above outlined, of a plurality of separate cut-* ting knives which are successively broughtlinto an operative position and singly operated to perform a pinked edge upon the material being operated upon.

This feature is considered important since it results in advantages which are not, to my knowledge, present in pinking machines as gen erally constructed.

One of the advantages resulting from the use of multiple knives is that such construction per-- mits of longer periods of operation between necessary changes or sharpening of the cutting knives than is possible in machines which employ but one cutting knife.

A further feature of the invention resides in a'machine' of the kind aforementioned, in which the use of a plurality of successively operated separate cutting knives prevents overheating of the said knives due to a cooling period which the cutting knives, one set of alternat knives may make a, V-shaped cut, while the intervening knives may produce a curved or scalloped cut, thus, resulting in an ornamental edge consisting of connected V-shaped and scalloped cuts upon the edge formed by the machine. Thus, it will be apparent that merely by selection and arrangement of cutting knives, a wide variation of ornamental edges is possible.

Another feature of the invention resides in a novel mechanism for operating the several knives independently as they are brought successively to the operatin position in the machine.

Still other features of the invention reside in a novel material feeding mechanism and a novel operating mechanism therefor.

Still other features of the invention reside in a novel material holding means and a novel operating means therefor.

Other features of the invention relateto certain novel and improved constructions, arrangements and combinations of parts hereinafter described and particularly pointed out in the claims,

the advantages of which will be readily understood and appreciated bythose skilled in the art. l i

The invention will be clearly understood from the accompanying drawings, illustrating the invention in its preferred'form and the following detailed description of the constructions therein shown. 7 a y Figure l is a top plan view of a pinkingmachine constructed in accordance with the present invention; q I

Figure 2 is a vertical sectional view on an enlarged scale taken substantially .on the line 22 of Figure 1, the view illustrating the general arrangement of the mechanism of the machine,

Figure 3 is a vertical sectional view on an enlarged scale taken at right angles to Figure 2,

, substantially on the line ,3- -3 thereof, a

Figure 4 is a horizontal sectional view, on a enlarged scale taken substantially on the line i -4 of Figure 2, i Q Y t Figure 5 is a vertical sectional view .on an enlarged scale, partlybroken away, and taken substantially on the line 5-5 of Figure 2,- illustrating the mechanism by which the knives are operated,

Figure 5 is a detail view illustrating the cams by which the knife operating means is operated,

Figure 6 is a vertical sectional view on an enlarged scale taken substantially on the line 6-6 of Figure 3, the view illustrating the knife carrier, various operatin elements of the ma chine and a cam assembly for operating said elements,

Figure 6 is a detail sectional view illustrating themanner-in which the several cams of the cam assembly are operably connected with the shaft upon which they are mounted,

Figure 7 is a vertical sectional view on a enlarged scale partly broken aWay,-the same being taken substantially on theline 'l1 of Figure 2 and illustrating the material feeding mechanism in one of its positions,

Figure 8 is a detail view on an enlarged scale substantially on the line 88 of Figure 2, illustrating the operating means of the material, holding means,

Figure e is a detail view illustrating the cams for operating the operating means of the material holding means,

Figure 9 is a View on an enlarged scale partly in section and with parts broken away, the view illustrating a portion. of the material feeding mechanism, the view being taken substantially on the line 99 of Figure 2,

Figure 9 is a detail view illustrating the cams by which the material feeding mechanism is raised and lowered relative to the material operated upon,

Figure 10 is a detail sectional view on an en-' larged scale illustrating the material feeding mechanism in one of its positions of operation,

Figure 11 is a view similar to Figure 10' illustrating still another operative position of the material feeding mechanism, s

Figure 11 is a detail view of the cams employed for imparting the feeding motion to the material feeding mechanism,

/ Figure'12 is a detail perspective view of a portion of the material feeding mechanism,

Figure 13 is adetailvertical sectional view on an enlarged scaletaken-substantially onthe line I3|3 of Figure 1, the viewv illustrating one of the-cutting knives in; its elevated position,

Figure 14 is .adetail horizontal'sectional view on an enlarged scale taken substantially on the line l4--l4-of Figure 13,

Figure 15 is a detail horizontal sectional view on an enlarged scale taken substantially on the line l-l 5 of Figure 13, v V

Figure 16 isadistended perspective view illustrating the shearing blades of the knives, and

Figures 1'? and 18 are detail plan views illustratingdifferent types of blades.

Referring to the drawings by reference character, and particularly to Figures 1 and 4, themachine includes a housing 20, which is preferably rectangular in form.

The housing comprises afront wall'2l, a rear wall 22, and twoside walls 23' and 24 These walls are preferably-securedtogether bymeans of screws 25 which have threaded engagement with lugs'25- at each corner of the housing as best illustrated in Figures 1, 4 and 5 of the drawings.

The top wall of the housing preferablyconsists of. two sections 2'Iand 28, and these sections are removablysecured in place by screws 29J which also have threaded engagement with the uppermost lugs 26, heretofore mentioned.

As best illustrated in Figure 5 of the drawings, the meeting edges of these sections Hand 28 are cut away asat 29' to provide-an opening, and also as at 39 to provide a seat for a cover plate 3|, which is removably secured in position by means of screws 32 and this cover plate is also provided with an opening 33 which opening will also be hereinafterreferred to as the operating position of the machine.

The housing, heretofore described, is preferably mountedwithin a suitable opening in an operating table 34, illustrated in dot and dash lines in Figure 1 of the'drawings.

By, reference to Figure 4 ofthe drawings, it will be seen that'the side wall 23 of thehousing, has two lugs 35 and 36 andthat the side wall 24 has two corresponding lugs 35' and 3B, the former being disposed respectively opposite to the latteras illustrated in said figure.

These lugs are recessed for the'reception of the ends of a pair of rods or shafts, the lugs 35 and 35 receiving. the opposite ends of a rod or shaft 31 while the lugs 36 and 36' receive the ends of a rod or shaft 38. Thus, these lugs 35 and 35 and 36 and 35' support their respective rods or shafts 31 and 38 which latter extend entirely across the interior of the housing 29.

Adjustably mounted on these rods 31 and 38, there is a plate 39, the main body portion of which is substantially circular in form. At diametrically opposite points, the plate 39 has two split sleeve bearings ll and 42, which receive respectively the rods'or shafts 3! and 38 and form the means by which the plate 33 may be slidably mounted upon the rods or shafts 3! and 38 and thus provide for its adjustment therealong. The plate 39 may be secured in an adjusted position upon the rods or shafts 31 and 38 by a tightening of the bolts 43, see Figure 5, to contract the split sleeve bearings 4i and 42 into holding engagement with their respective rods or shafts 31 and 38.

Upon its upper edge, the plate 39 is provided with two shoulders 49' which shoulders provide 'supportfor the central portion of the plate 21 and these shoulders are provided with threaded openings for the reception of screws 35", see Figure 1, by which the central portion of the plate 21 may be secured to the plate 39.

Depending from Ithe lower portion of the main body 40, of'the plate 39, see Figures 2 and 5, there is an arm 44 which carries a bearing 45, the purpose of which will be hereinafter described and at a point substantially central of its circular body portion 43, this plate is provided with. a bearing 45. This bearing 46, see Figure 6, forms a partial support for a shaft 31, which has an enlarged'portion 48 at one end thereof! The shaft 41. is supported at its ends by means of pinion bearings 49, the bolts 59 of which have threaded engagement with the lugs 5| on the inner faces of the side walls 23 and 24 of the housing 20. Lock nuts 52"are employed to secure the threaded bolts 50 in their adjusted positions. This construction provides for longitudinal adjustment of the shaft 41 relative to the plate 39 for a purpose which will hereinafter become apparent";

As best illustrated in Figure 5 of the drawings,

'the circularbody portion 40 of the plate 39 is provided with a radially extending cut out portion 52 which extends from a point closely adjacent the bearing 43 through the outer upperedge of the said circular body portion 49 of the plate'35. Slidably mounted in the cut out portion 52, there is a block 53, the purpose of which will be hereinafter specifically described.

By reference to Figure 6, it will be seen that the plate 39'is provided upon its left hand face with a channel 54 which channel, as illustrated in Figure 5, is concentric with the axis of the shaft Mandhas its ends oppositely disposed at opposite sides of the out out portion 52 of the plate 39. The plate 39 is also cut away on this same face as at 55'and 53 to provide relatively narrow substantially concentric bearing surfaces 51, 58 and 59.-

The sliding block 53, heretofore mentioned, is provided with an arcuate slot 33, the ends of which, when the block is in'its innermost position in the slot 52, register with their respective ends of the channel 5 3 to'form a complete circularchannel as illustrated in Figure 5 of the drawings.

The reference numeral designates a knife carrier and as illustrated in Figure 6 of the drawings, this knife carrier is keyed as at 66 to the shaft 41 heretofore mentioned, it being secured thereon by a nuts! and. a-lock nut 68 which have carrier has a central hub portion I0, a main body portion II which is substantially circular in form and from which extend a plurality of spaced, relatively short radial arms 12.

Each of the radial arms is formed upon its right hand face, see Figure 6, with a groove or channel I3 and slidably mounted in each of these channels 13, there is a block I4. Each of these sliding blocks has a roller I5, which is carried by a bolt '16 removably threaded into the block and the several rollers traverse the channel 5 1 of the plate 39 and the arcuate slot 60 of the sliding block 53, heretofore described, as best illustrated in Figure 5, upon rotary movement being imparted to the knife carrier 65.

The cutting knives are mounted upon the outer end faces of the radial arms 12 of the knife carrier which faces constitute the periphery of the nife carrier, referred to in the claims.

Each of the cutting knives comprises three cutting elements 11, 1-8 and 19 and since they are all of the same mechanical structure, the detailed opening formed by the notches 82 is slightly larger in diameter than the diameter of the belt or screw 83', which construction allows for relative adjustment of the cutting elements Hand 18. .After the cutting elements 11 and '58 have been adjusted, they are maintained in position by side plates 90, see Figure 14, which engage their respective cutting elements as at 9 I, these side plates being secured in position by means of screws or bolts 9.2.

Each of the cutting elements "I1 and I8 is formed upon the inner edge of its portion 85 with an angular face 83 which is slightly undercut to form a shearing edge 84.

As best illustrated in Figure 4, when these two cutting elements are secured in their proper positions on the periphery of the knife carrier, they form a V-shaped cutting notch A. However, as illustrated in Figure 17, the cutting elements may be so shaped as to provide a curved cutting notch B, or as in Figure 18, a modified curved and V notch C, from which it will be. readily apparent that various forms of notches as well as combinations of cutting notches of various forms may be employed.

The cutting element I9, hereinafter referred to as the slidable knife, has two right angularly disposed portions 95 and 9h. The portion 95 has an opening 91 for the reception of a bolt or screw 98 by means of which the cutting element I9 may be secured to a sliding block iiiheretofore described, see Figure 13. The portion 96 of the cutting element '53 has its outer end sha-ped to conform to the cutting notch formed by the cutting elements ll and I3 and as best illustrated in Figures 13 and 16, this portion of the cutting element I5 is bent or rolled slightly outwardly as at 91 to form two shearing edges 98' which co- I operate With the shearing edges ll l of the out I80. -reduced as at WI and it extends beyond the ting elements ll and I0 to perform a cutting operation,

' In the present embodiment of the invention, the

knife carrier is illustrated as having eight cutting knives and it is to be understood that each is constructed in the manner just described.

The several cutting knives are successively brought to their operative position in the opening '33 in the table by imparting an intermittent or accomplished will be hereinafter specifically described.

The bearing 45, see Figure, 6, which depends from the lower portion of theplate 39, forms the support for the reduced inner end 99 of a shaft The opposite end of this shaft I00 is also side wall2 I of the housing 20.

The reduced end 99 of the shaft I00 operates in a bushing I02 in the bearing 45 while the reduced end l0I of said shaft operates in a bushiing llllwhichrin turn operates in a bearing I03 secured to, the outer face of the side wall 24 of the housing 20. by means of bolts I04.

,Keyed to theouter end of the reduced portion IOI of the shaft. I00, there is a driving pulley I05 anda balance orfiy wheel I06 which may also serve'as a hand wheel for manual operation of the shaft I60. The key, which is designated I08, is of special construction and will be hereinafter specifically described; A driving belt I01, which may be operated by, a suitable prime mover not here illustrated, passes around the driving pul- Secured to the shaft 41, see Figure 6, by means of a set screw IIO, there is a collar I09 and secured to. this collar as by a screw or bolt III, there isa star wheel I I2 of a conventional Geneva movement, the notches of the star wheel being designated H3, the intervening curved seats of the star whee1 II2 being designated II4, see Figures 2, 4 and 7.

Referring again to Figure 6' of the drawings,

the reference character II5 designates a collar radially from the collar H5 and upon its outer end, the arm I 2| carries a roller I22 which, as

the shaft I00 is rotated, successively engages the notche H3 of the star wheel I I2 to impart an intermittent, or step by step rotary movement thereto and to the shaft 41 by which it is carried. The arm I2I is so positioned that as its roller I22 leaves a notch H3 in the star wheel, the

curved portion II9 of the star Wheel lock will engage that curved seat N4 of the star whee1 immediately following the notch from which the roller I22-of thearm I2I just passed, thus locking the star wheel I I2 against movement until the arm I2I nearly completes a revolution and its roller I22 engages the next succeeding slot II3 of the star wheel II2 whereupon the star wheel or bolt I4I.

indexing mechanism for the knife carrier 65 which indexing mechanism serves to bring the several knives of the knife carrier successively to operative position in the opening 33 in the table and to hold the knife carrier against movement until a knife has performed a cutting operation.

The cutting operation of each of the cutting knives is performed by advancement of the slidable knife thereof through the opening in the table and then retracting the slidable knife through said opening during which movement it passes into and through the notch formed by the stationary cutting elements 11 and 18. During this retracting movement of the slidable knife, its shearing edges 98 cooperate with the shearing edges 84 of the stationary cutting elements to effect the cutting operation.

Operation of the slidable knife of each of the cutting knives is accomplished in the following manner.

As heretofore stated, the cutting knives are brought successively to the operating position in the cpening 33 of the table by an intermittent or step by step movement of the knifecarrier.

In Figures and 6, a slidable knife is shown in the operative position and for the purpose of illustration, it will be assumed that this knife has not as yet performed its cutting operation.

When a cutting knife arrives at its operative position, the roller 15 which is carried by the sliding block 14 which block carries the slidable knife, passes from the channel 54 into the arcuate slot 60 of the sliding block 53.

the plate 30, is carried by a bar I40, it being secured to the upper end of the bar by a screw The bar I40 is cut out as at I42 to straddle the shaft 41 and also as at I43 to straddle the shaft I00.

Near its lower end, the bar I40 is provided with two spaced rollers I44 and I45, and these rollers I 44 and I45, are operated respectively by cams I46 and I-41 which are keyed to the shaft I00 as operation. The contours of these cams is such that when the cams are properly positioned relative to each other they will positively reciprocate the bar I40 in each of its directions of movement. Thus, as the shaft $00 is driven, the cams I46 and I 41 will reciprocate the bar 40 to advance and retract that particular slidable knife which "is in the operative position in the opening 33 of the table.

Means is provided to hold the material being operated upon during the cutting operation and also during the movement of the slidable knife-to its advanced position.

The material holding means is best illustrated in Figures 1, 6, 8 and 13.

In the present embodiment of the invention, it consists of a substantially rectangular frame I50 having a nose portion I5I of V shape. As best illustrated in Figures 6 and 13, it is adjustably secured to the upper end of a reciprocating bar I52 by means of a bolt I53 which passes through an elongated slot I54 in the bar I52.

The bar I52 passes through an opening I64 in the table, see Figure 6, and by reference to Figure 8 it will be noted that the bar I52 has two elongated slots I55 and I56 through which the shafts 41 and I00 pass respectively. The bar I52 also has two spaced rollers I58 and I59 which, cooperate respectively with two cams I60 and Itl which cams are illustrated in detail in Figure 8 The cams I60 and IBI are keyed to the shaft I00 as at I65 and are operated thereby to positively operate the bar I52 in both of its directions of movement thereby to raise and lower the material holding means I50.

Means is also provided to feed the material operated upon relative to the cutting knives and this means and its operation will now be described,

Referring to Figures 1, 2, 3 and '1 of the drawings, the reference numeral I10 designates a material engaging foot or the like which has a roughened face I1I which provides for firm engagement with the material being operated upon.

As illustrated in Figure 2, the foot I10 is mounted upon the reduced extension I13 of a block I14 and it is loosely retained upon the extension for rocking movement thereon by means of a nut I15.

The block I14, see Figure 1, has an opening I16 in which is received a rod I11. The block I14 is provided with a kerf I18 which extends from the opening I15 to the end of the block. This kerf, I18, together with the screw or bolt I19, provides means for adjustably securing the block upon the rod I11.

The rod I11 extends downwardly through an opening in the'table and the block I14 is secured to the upper end portion thereof in such a manner that the block extends across the table in a direction substantially at right angles to the direction of travel of the material being operated upon with the length of the foot I10 disposed in the direction of travel of the material being operated upon.

In addition to the rocking movement of the foot, it also has a vertical reciprocating movement to move it into and out of feeding engagement with the material operated upon and a horizontal reciprocating movement to effect feeding of the material operated upon relative to the operating position and the cutting knives.

Rigidly secured to and depending angularly from the rod or shaft 31, see Figures 2 and '7, there is an arm I and mounted in the lower end of this arm I80, there is a shaft I8! which also has a bearing in a lu I82 which projects from the lower edge of the plate 39, see Figure 5.

Referring to Figure 7, a block I83 is rigidly attached to one end of the shaft I8! and extending upwardly from opposite sides of said block, there are two plates I84 between the upper ends of which is interposed a block I85 to which the plates I04 are secured. The upper block I85 has an opening I86 through which the rod I11 extends, the lower end of said rod being connected to a block I81 which is slidably mounted between the plates I84. The lower end of the rod I11 is threaded as at I88 and carried by said threaded wardly against the sliding block I81 tending at all times to force downwardly the rod I11 and move the foot I'I0 into engagement with the material.

The sliding block I81 carries upon its right hand face, see Figure 4, a roller I9I which rests upon the arm I92 of a forked member I93, better illustrated in Figures 9 and 12. The upper face of the arm I92 is curved downwardly as at I94 near its free outer end, the purpose of which will hereinafter appear.

The forked member I93,'heretofore mentioned, comprises a block-like body portion I95 which has a bearing portion I96 for the reception of a shaft I9'I carried by a lug I98 which depends from the sleeve I99 which also forms the means for attaching the arm I80, heretofore mentioned, to the rod or bar 31.

The arm I92 of the forked member I93 is removably secured to the side face 200 of the block I95 by means of a screw l and secured to the opposite side face of the block I95 in a similar manner, there is an arm 202. This arm differs from the arm I92, in that its lower edge 203 has its outer end portion curved as at 204 in a direction opposite to the direction of the curved drawings, the roller I9I of the block I81 on the lower end of the rod I'II, rests directly upon the arm I92 of the forked member I93. By this construction, it will be obvious that as the forked member I93 is rocked about its pivotal point in an upward direction, the rod I'I'I will be moved in an upward direction, against the action of the spring I90, to move the foot I'I0 out of engagement with the material operated upon to permit of its being moved relative to the operating position and the cutting knives in order that one of said knives may perform a cutting operation thereon.

In Figures 6, 7 and 9, the mechanism which is employed to rock the forked member I93 about its pivotal point is illustrated and this mechanism and its operation will now be described.

A'reciprocating bar 205'has an elongated slot 20S'for the reception of the shaft I00 and a forked upper end for straddling the shaft 41, see Figure 9 of the drawings.

As illustrated in Figure 6 of the drawings, this reciprocating bar is positioned adjacent to the cam I 60, heretofore mentioned. Projecting from the right hand face of the bar 205, in said figure, there are two spaced rollers 208 and 209, they being located respectively adjacent to the lower and upper ends of the elongated slot 206.

Carried by the shaft I00 and keyed thereto as at 2I0, there are two cams 2I I and 2 I2 illustrated in detail in Figure 9 of the drawings.

The contours of the cams 2H and 2I2 are of such form and the relative positions of the cams upon the shaft I00 are such that as the shaft is rotated, thecams will act positively upon the bar 205 in both of its directions of movement, the cam 2I2 acting upon the roller 209 to elevate the bar while the cam 2 acts upon the roller 29Bto move the bar .205 in the opposite direction.

An arm 2I3, see Figure 9, is rigidly secured to thebar as at 2l4'and extends to a point'beneath and supports the arm I92 of the forked member I93 as at 2I4' and the upper edge of the arm 2I3 has a curved face 2I5 at the end thereof.

From the foregoing, it will be apparent that as the shaft I00 is rotated and the cam 2I2 moves the bar 205 upwardly, the rigid arm 2i3 will act to rock the forked member I93 upwardly and that when the cam2I I moves the bar downwardly, the forked member I93 will be rocked downwardly under the influence of the spring I90 through the medium of the block I81 and Operatively connected to the shaft IBI, see

Figures 4 and 9, there is an upstanding lever 220 and pivotally mounted in the upper end 22I, of said lever, there is a pin 222. This pin has a shoulder or seat 223, and a threaded. end 224 for the reception of a nut 225 by means of which itmay be adjustably fixed in the open slot 226 in one end of a link 221.

' The opposite end of the link 22! is pivotally connected to a pin 230, see'Figures 10 and 11,

:which pin'is adjustably mounted in an elongated slot 23I in a plate 232, by means of a nut 233. The plate 232 is carried by and extends slightly beyond the edge of a reciprocating bar 235.

The reciprocating bar 235 is provided near its upper end with an elongated slot 239 through which the shaft 41 passes and near its lower end with a similar slot 231 through which the shaft I00 passes. Carried by this reciprocating bar near the upper end of the slot 231 there is a roller 238 and near the lower end of the slot 231 there is a roller 239.

As illustrated in Figure 6, the reciprocating bar 235 is mounted next to the cam 2I2 and reciprocating movement is imparted thereto by two *cams 240 and 24I which are keyed to the shaft I00 as at 242 and which are illustrated. in detail in Figure 11 The cam 240 operates upon the roller 238 to move the reciprocating bar 235 in the up direction while the cam 24I acts upon the roller 239 to move the bar 235 in the opposite or dow direction.

By reference to Figures 10 and 11, it will be obvious that as the reciprocating bar 235 is moved in the up direction, the pin230 will likewise move upwardly and through the medium of the link 22'! the lever 220 and the shaft I8I will be rocked in a clockwise direction.

7 Referring now to Figure 7, it will be apparent that movement of the shaft IOI in the clockwise and fro' movement, heretofore mentioned, to the material feeding foot i'liland it will be obvious that the extent'of this movement may be varied by adjustment of the pins 222 and 233 in their respective slots 226 and 23L Means is also provided to back up the slidable knives" to maintain them in proper cutting relation, to the stationary knives during an actual cutting operation and this means will now be described.

Projecting from the upper edge of the plate 39 through the opening 33 to a point above the table, there is a rectangular extension 259, see Figures and 6 of the drawings.

This extension has four passages 25! therein, see Figures 5 and 13. The passages 25E receive pins 252 carried by a plate 253 which is mounted in front of the extension 250 and the pins 252 have a friction fit in their respective passages 25L A screw 255, see Figure 13, is threaded into the extension 250 and the inner end of this screw engages the plate'253. By this means, adjustment of the plate to back up the slidable knives while they are in the operative position, may be obtained. The approach edge as well as the bottom edge of the plate 253 is preferably slightly beveled as at 256 to insure proper engagement of the knives with the front face thereof as they come to the operative position;

The construction just described also permits of adjusting the cutting edges of the cutting" elements of the slidable knives relative to the cutting edges of the stationary knives after they have been reduced in size by sharpening.

Further referring to Figure 13, it will be apparent that one or more shims 260 may be inserted between the portions "89 of the stationary knives, the thickness of which shims will permit of proper adjustment of these cutting elements relative to those of the slidable knives as they become reduced in size as a result of sharpening.

Having described'the construction and operation of the'several mechanisms embodied in the machine, a complete sequence of operation of the machine will now be recited.

In each of the figures of the drawings with the exception of Figure 6, the several parts are shown in the positions which they attain just prior to the descent of aslidable knife to perform a cutting operation and'these positions may be specifically'described as follows: a cutting knife is located at the operative position of the machine with the slidable knife'thereof in the raised position; the material holding means is also in its elevated' position and the material feeding foot is elevated to a point where it is out of engagement with the material operated upon.

The several cams which operate the different mechanisms, it will be understood, are so positioned that as the machine starts to operate the several 'meohanisms will be operated in the following sequence.

As illustratedby the arrow B, the shaft Hill is rotated in a clockwise direction'and upon movement'of'the shaft, the material holding means descends immediately into engagement with the material operated upon to hold it during a cutting operation.

Upon continued movement of the shaft H10, the sliding knife of that cutting knife located at the operating position of the machine is moved downwardly to perform the cutting operation.

During the performance of the two operations just described, the material feeding foot [T0 is moving slowly from left to right in the drawingsthesliding knife, the indexing mechanism-moved the knife carrier one step in the counterclockwisedirection to bring the next succeeding cutting knife into the operating position.

Upon arrival of the last mentioned cutting When the said slidable knife reaches its fully:

advanced'position it rests thereinmomentarily to permit of elevation of the material holding means to a point where it frees itself from engagement with the material.

During these operations, the material feeding foot HE! has reached the end of its movement to the right in the drawings and as the material holdin means is in its advanced position, the material feeding foot I70 is moved to theflleft in the drawings to position an uncut portion of the material at the operating position of the machine.

The foregoing is a description of one complete sequence of operation of the machine and it is to be understood that such sequence is performed by each of the cutting knives as they are successively brought to the operating position.

As heretofore stated, the several keys by which the several cams as well as the hand wheel and the driving pulley are operatively connected with the shaft I00, are of special construction and this construction will now be described.

By reference to Figure 6, it will be noted that in each instance, two elements are operatively connected with the shaft I00 by a single key and that'in each instance, the construction is the same. Therefore, the description of one pair of cams, for example, the cams 240 and 24l will suffice.

Referring to Figure 6, it will be noted that the shaft mil has a slot 300 in its peripheral surface and that the cams 240 and 2M are recessed as at 311! to form seats for the key 302 The depth of the key seat is such that when the key is positioned in the seats, the adjacent or abutting faces of the cams will contact each other.

As illustrated in Figure 6a, the key 302 is of sufiicient length to extend to the bottom of the slot as at 303.

The cams are secured together by a screw 304 which also passes through the key 302 serving to secure the cams together and to lock the key in position therebetween and in engagement with the shaft.

The foregoing construction provides a compact structure and also permits of-staggering of the keys around the shaft in cam assemblies where such practice is necessary or-even desirable. I

In Figures 1 and 6, there is illustrated a mate-- rial guide 310 which consists of an elongated U- shaped member 3H, between the legs of which two bolts 3l'2 pass. Each of'the bolts .3l-2 also passes through a slot M3 in the table and. each is provided with a thumb nut which engages the upper edges of the legs of the elongated U-shaped member.

'Ihe elongated U-shaped member 3 occupies a position substantially at right angles to that of the slots 3l'3 which construction provides for universal adjustment of the U-shaped member 3 relative to the operative position of the machine. i

From the foregoing it will be apparent that the presentinvention provides a machine, the constructions and arrangements of which result in the accomplishments of the objects recited therefor.

Having thus described the invention what is claimed as new is:

1. In a pinking machine, a revoluble knife carrier, a plurality of complete cutting units carried by and movable radially of the knife carrier, means for imparting an intermittent rotary movement to the knife carrier to move the cutting units successively to and from an operating position, means for operating the cutting units while in the said operating position to effect a cutting operation thereof, and means for feeding a material to .be out in a straight line in the path of the cutting units when the latter are in operating position.

2. In a pinking machine, a revoluble knife car-' rier, a plurality of complete cutting units carried by and movable radially of the knife carrier,

means for imparting an intermittent rotary movement to the knife carrier to move the cutting units successively to and from an operating position, means for retaining the cutting units against movement relative to the knife carrier when they are in their inoperative positions, means for retaining the knife carrier against movement during-an operation of a cutting unit carried thereby, and means for operating the cutting unit when in the operating position to effect a cutting operation thereby.

3. In a pinking machine, a rotatable knife carrier, a plurality of complete cutting units carried by and movable radially of the knife carrier. means for' imparting an intermittent rotary movement to the knife carrier to move the cutting units successively to and from an operating position, means for retaining the cutting units against movement relative to the knife carrier during their movement to and from said operating position, and a single means for successively operating-said cutting units when in their operating position to effect .a cutting operation thereof.

- 4. In a pinking machine in combination, a table having an opening therein, a rotatable knife carrier mounted beneath the table, a plurality ofcutting knives carried by and movable radially of the knife carrier, means for imparting an intermittent rotary movement to the knife carrier to move the knives'successively to and from an operative position at the opening in the table, and means for operating said knives when in their operative position to advance and retract them through the opening in thetable to effect a cutting operation of the knives.

5. In a pinking machine, a rotatable carriena pluralityof stationary cutting knives mounted on the periphery of the carrier, a corresponding number of cutting knives slidably mounted on the carrier for movement radially thereof into cooperative cutting relation with their respective stationary cutting knives to effect a cutting opera-- ing amaterial to becut ina straightline in the path of the cutting knives when they are in op-' carrier mounted beneath the table, a pluralityof stationary cutting knives mounted on the periphery of the carrier, a corresponding number of slidable cutting knives mounted on the carrier for reciprocative movement radially thereof into cooperative cutting relation with theirrea spective stationary cutting knives to effect a cutting operation, means for imparting an intermittent rotary movement to said knife carrier to move the knives successively to and from an operating position at the opening in the table, means for operating said slidable knives when in their operative position to advance and retract them through the opening in the table to effect a cutting operation of the knives, means for feeding material to be operated upon across the table and over the opening therein while a slidable knife is in its advanced position, means for holding said material against movement during theadvancing and retracting movements of a slidable knife to perform a cutting operation, and means for releasing said material holding means when any one of the slidable knives is in its advanced position. t

'7. In a pinking machine in combination, a table having an opening therein, a rotatable knife carrier mounted beneath the table, a plurality:

of stationary cutting knives mounted upon the periphery of the carrier, a corresponding number of slidable cutting knives mounted on the carrier for reciprocative movement radially thereof into cooperative cutting relation with their respective stationary cutting knives to ef' feet a cutting operation, means for imparting an intermittent rotary movement to the knife carrier to move the knives successively to and from an operating position at the opening in the table, means for advancing each of the knives through the opening in the table as they come successively to the operating position, material feeding means for moving material to be. operated upon across the table and. over ,the opening therein, means for operating the ma-, terial feeding means subsequently to the move--, ment of each of the slidable knives to its .advanced position, means for holdingthe material operated upon against movement relative to the, table during a cutting operation, means for mov ing the material holding means out of engagement" with the material prior to each operation, of the material feeding means, means for move ing the material holding means into holding relation with the material subsequent to each operation of the material feeding means, and means for retracting an advanced knife through the material and the opening in the table to mounted upon the knife carrier for'reciprocative ,movement radially thereof into cooperative cutting relation withtheir respectivestationary cutting knives to effect a cutting operation, means for imparting an intermittent rotary movement to the. knife carrier to move the knives successively to and. from an operating position at the opening in the table, reciprocating means for eating knives through the opening in the table as they come successively to the operating position, to effect the aforementioned cutting operation, a cam for operating .said reciprocating means to advance a knife throughthe opening in the, table, a second cam for operating said reciprocating means to retract the knife from its advanced position through the opening in the table, to perform the aforementioned cutting operation, means for operating said cams, means for feeding the material to be operated upon over the opening in the table and means for holding the material against movement during the advancing and retracting movements of a reciprocating knife.

.9. In a pinking machine, in combination, a table having an opening therein, a rotatable I knife carrier mounted beneath the table, a pluposition at the opening in the table, means for advancing and retracting each of the reciprocating knives through the opening in the table as they come successively to the operating position, to effect .the aforementioned cutting operation, means .for feeding the material to be operated upon over the opening in the table, means for holding the material against'movement during the advancing and retracting movements of a reciprocating knife, reciprocating means for moving the material holding means into and out of engagement with the material, a cam for moving said reciprocating means in one direction, a second cam for operating said reciprocating means in the opposite direction, and means for operating said earns.

10. In a pinking machine in combination, a table having an opening therein, a rotatable knife carrier mounted beneath the table, a plurality of stationary cutting knives mounted upon the periphery of the rotatable knife carrier, a

corresponding number of slidable' cutting knives mounted upon the knife carrier for reciprocativemovement radially thereof into cooperative cuttingrelation with their respective stationary cutting knives 'to effect a cutting operation, means for imparting 'an intermittent rotary movement to. the knife carrier to move the knives successively to and from an operative position at the opening in .the table, means for advancing and retracting veach of the reciprocating knives through theopening in the table as they come successively to the operating position, to effect the aforementioned cutting operation, means for holding the material to be operated upon against movement during the advancing and retracting movements of a reciprocating knife, means for feeding the material to be operatedupon over the table and the openadvancing and retracting each of the recipro-' ing said reciprocating means in opposite direction and means for operating said cams.

11. In a pinking machine in combination, a table having an opening therein, a rotatable knife carrier mounted beneath the table, a plurality of stationary cutting knives mounted upon the periphery of the rotatable knife carrier, a corresponding number of slidable cutting knives mounted upon the knife carrierfor reciprocative movement radially thereof into cooperative cutting relation with their respective stationary cutting knives to effect a cutting operation, means for imparting an intermittent rotary movement to the knife carrier to move the knives successively to and from an operating position at the opening in the table, means for advancing and retracting each of the reciprocating knives through the opening in the table as they come successively to the operating position to effect the aforementioned cutting operation, meansfor holding the material to be operated upon against movement during the advancing and retracting movements of a reciprocating knife, means for feeding the material operated upon over the table and the opening therein, said means including a material engaging foot, means for moving said material engaging foot into and out of engagement with the material to be operated upon, means for imparting feeding movement to the material engaging foot while in engagement with the material to be operated upon, and separate means for imparting retracting movement to the material feeding foot when it is disengaged with the material to be operated upon.

12. In a pinking machine in combination, a table having an opening therein, a rotatable knife carrier mounted beneath the table, a plurality of stationary cutting knives mounted upon the periphery of the rotatable knife carrier, a corresponding number of slidable cutting knives mounted upon the knife carrier for reciprocative movement radially thereof into cooperative cutting relation with their respective stationary cutting knives to effect a cutting operation, means for imparting an intermittent rotary movement to the knife carrier to move the knives successively to and from an operating position at the opening in the table, means for advancing and retracting each of the reciprocating knives through the opening in the table as they come successively to the operating position to eifect the aforementioned cutting operation, means for holding the material to be operated upon against movement during the advancing and retracting movements of a reciprocating knife, means for feeding the material operated upon over the table and opening therein, said means including a material engaging foot, reciprocating means for moving said material engaging foot into and out of engagement'with the material to be operated upon, separate cams for positively operating said reciprocating means in opposite directions, means 'for imparting feeding movement to the material engaging foot While in engagement with the mate-- rial to be operated upon, reciprocating means for operating said last mentioned means, separate cams for positively operating said last mentioned reciprocating means in opposite directionsand a single shaft for operating the cams of'the material holding means and the material feeding means. r

r 13. In a pinking machine in combination, a table having an opening therein, a rotatable knife carrier mounted beneath the table, a pluralityof stationary cutting knives mounted upon the p61 riphery of the rotatable knifecarrier, a corre ly to and from an operating position at the openmaterial operated upon over the table and the opening therein, said means including a material engaging foot, reciprocating means for moving said material engaging foot into and out of engagement with the material to be operated upon, separate cams for positively operating said reciprocating means in opposite directions, means for imparting feeding movement to the material engaging foot while in engagement with the material to be operatedupon, reciprocating means for operating said last mentioned means, separate cams for positively operating said last mentioned reciprocating means in opposite directions, and a single shaft for operating the reciprocating knife advancing and retracting means, the cams for operating the material holding means and the cams of the material feeding means.

14.In' a pinking machine in combination, a table having an opening therein forming the operating position of the machine, an intermittently operated rotating member mounted beneath the operating position of the table, a plurality of spaced cutting mechanisms carried by the rotating member, a cutting mechanism operating means, means for operating the rotating member to bring the cutting mechanisms successively to the operating position and into operative relation with the cutting mechanism opcrating means, means for operating the cutting mechanism operating means, means for feeding a material to be operated upon to the operating position of the table, and means for holding the material during an operation of the cutting mechanism. V

15. In a pinking machine in combination, a table having an opening therein forming the operating position of the machine, an intermittently operated rotating member mounted beneath the operating position of the table, a plurality of spaced cutting mechanisms carried by the rotating member, each of saidcutting mechanisms including a stationary knife and a cooperating reciprocating knife, a cutting mechanism operating means, means for operating the rotating member to bring the cutting mechanisms successively to the operating position and to operatively connect the reciprocating knives thereof with the cutting mechanism operating means, means for operating the cutting mechanism operating means, and means for feeding a material to be operated upon to the operating position of the machine.

16. In a pinking machine in combination, a

table having an opening therein forming the op erating position of the 'machine, a rotating member mounted beneath the operating position of the machine, a plurality of cutting mechanisms carried by the periphery of the'rotating member in spaced relation to each other, each of said mechanisms including a stationary knife and a cooperating reciprocating knife, means at the operating position of the machine for operating the reciprocating knife of each of the cutting mechanisms as they are brought successively to the operating position of the machine, means for intermittently operating the rotating member to bring the cutting mechanisms successively to the operating position of the machine and their reciprocating knives, successively into operative connection with said reciprocating knife operating means, and means for operating the reciprocating knife operating means.

17. In a pinking machine in combination, a table having an opening therein forming the operating position of the machine, a rotating member mounted beneath the operating position of the machine, a plurality of cutting mechanisms carried by the periphery of the rotating member in spaced relation to each other, each of said mechanisms including a stationary knife and a co-operating reciprocating knife, means'at the operating position of the machine foroperating the reciprocating knife of each of the cutting mechanisms as they are brought successively to the operating position of the machine, a driving shaft, means for operating said driving shaft, means operated by the driving shaft for imparting an intermittent rotary movement to the ro-,

tating member to bring the cutting mechanisms successively to the operating position and their reciprocating knives into operative relation with said reciprocating knife operating means, means operated by the'driving shaft for operating the reciprocating knife. operating means, means operatedby the driving shaft for feeding material to be operated upon relative to the operating position of the machine, and separate means operated by the driving shaft for holding a material to be operated upon during a cutting operation of a cutting mechanism. r

18. In a pinking machine in combination, a table having an opening therein forming the operating position of the machine, a rotating member mounted beneath the operating position of the machine, a plurality of cutting mechanisms carried by the periphery of the rotating member in spaced relation to each other, each of said mechanisms including a stationary knife and a co-operating reciprocating knife, means at the operating position of the machine for operating the reciprocating knife of each of the cutting mechanisms as they are brought successively to the operating position of the machine, a driving shaft, means for operating said driving shaft, means operated by the driving shaft for imparting an intermittent rotary movement to the rotating member to bring the cutting mechanisms successively to the operating position and their reciprocating knives into operative relation with said reciprocating knife operating means, means operated by the driving shaft for operating the reciprocating knife operating means, means operated by the driving shaft for feeding material to be operated upon relative to the operating position of the machine, and separatemeans operated by the driving shaft for holding a material to be operated upon during a cutting operation of a cutting mechanism, and during a movement of the rotating member to position a subsequent cutting mechanism at the operating position of the machine with its reciprocating knife in position to start a cutting operation.

19. In a machine of the type described in combination, a table having an opening therein constituting the operation position of the machine, a cam shaft mounted beneath the table, means for rotating said cam shaft, an intermittently operated rotating member mounted beneath the operating position of the table, a plurality of spaced cutting mechanisms carried by the rotating member, each of said cutting mechanisms including a stationary knife and a cooperatin reciprocating knife, means at the operating position of the machine for operating the reciprocating knife of each of the cutting mechanisms as the cutting mechanisms are brought successively to the operating position of the machine, an indexing mechanism operated by the cam shaft for imparting intermittent rotary movement to the rotating member to bring the cutting mechanisms successively to the operating position of the machine and their reciprocating knives into operative relation with said reciprocating knife operating means, said indexing mechanism also serving to lock the rotating member against movement during its periods of rest, a pair of cams carried by the cam shaft for operatingthe reciprocating knife operating mechanism, means for feeding material to be operated upon relative to the operating position of the machine, a pair of cams carried by the cam shaft for operating the material feeding means, and means for holding the material operated upon during a cutting operation and during a movement of the rotating member to position a subsequent cutting mechanism at the operating position of the machine and to position its respective reciprocating knife in position to start a cutting operation.

20. In a machine of the type described in combination, a table, means for performing a series of operations upon a material fed over said table, and means for advancing the material to be operated upon in a direction towards the means for performing said series of operations, said means including a slidably mounted rod, a material engaging foot pivotally carried by said rod, means for moving said rod to cause said material engaging foot to move in a direction away from the table, spring means acting upon said rod for moving the material engaging foot in a direction towards the table into yielding engagement with the material to be fed thereover, means operatively associated with said rod for rocking said material engaging foot in one direction when it is in feeding engagement with the material upon the table and in the opposite direction when it is disengaged with said material, and means for adjusting the extent of rock ing movement imparted to the material engaging foot.

21. In a machine of the type described in combination, a table, means for performing a series of operations upon a material fed over said table, and means for advancing the material to be operated upon in a direction towards the means for performing said series of operations, said means including a slidable rod, a material engaging foot pivotally carried by said rod, means for moving said rod to cause said material engaging foot to move in a direction away from the table, adjustable means for varying the extent of movement of the material engaging foot in the direction away from the table, spring means acting upon said rod for moving the material engaging foot in a direction towards the table intoyielding engagement with the material to be fed thereover. means for adjusting the tension of said spring means, and means for rocking the material engaging foot in one direction when it is in feeding engagement with the material upon the table and in the opposite direction when it isdisengaged with said material.

22. In a machine of the type described in com-1 bination, a table, means for performing a series of operations upon a material fed over said table, and means for advancing the material to be operated upon in a direction towards the means for performing said series of operations said means including aslidable rod, a material engaging foot pivotally carried by said rod, means for moving said rod to cause said material engaging foot to move in a direction away from the table, adjustable means for varying the extent of movement of the material engaging foot in the direction away from the table, spring means acting upon said rod for moving the material engaging foot in a direction towards thev table intoyielding engagement with the material to be fed thereover, means for adjusting the tension of said spring means, means operatively associated with said rod for rocking the material engaging foot in one direction when it is in feedengagernent with the material upon the table and in the opposite direction when it is disengagecl with said material, and means for adjusting the extent of rocking movement imparted to the material engaging foot.

23. Ina machine of the character described in combination, a table having an opening therein providing the operating position of the machine, a cutting mechanism including a reciprocating knife for performing a cutting operation at the opening in the table, means for moving the reciprocating knife to, and for holding it momentarily at rest in an advanced position prior to a cutting operation, means for bolding a material to be operated upon against movement relative to the table during movement of the reciprocating knife to its advanced position, means for releasing th material holding means while the reciprocating knife is in the advanced position, means for feeding the material relative to the table while the material holding means is in its released position, means for moving the material feeding means into engagement with the material, means for imparting feeding motion to the material feeding means, means for disengaging the material feeding means from the material and for retaining it in said disengaged position until after a cutting operation by the knife, means for moving the material holding means into holding engagement with the material while the knife is inits advanced position of rest, and means for operating the knife to perform a cutting operation subsequent to the engagement of the material by the mate--v rial holding means.

24. In a pinking machine in combination, a table having an opening therein, a rotatable knife carrier mounted beneath the table, a plurality of cutting mechanisms carried by the knife carrier, each of which includes a reciprocating knife, means for imparting intermittent rotary motion to the knife carrier to bring the cutting mechanisms successively to an operating position beneath the opening in the table, means for advancing the reciprocating knife of each cutting mechanism through the opening in the table as the cutting mechanisms arrive successively at the operating position, means for retracting the advanced knife of a cutting mechanism through the material operated upon and the opening of the table to effect a cutting operation, means for holding the material operated upon against movement during the retraction of the advanced knife of a cutting mechanism in the performance of itscutting operation and subsequent thereto until the knife carrier has been rotated to position the next successive cutting mechanism at the operating position and its respective knife has been advanced through the opening in the table and the void formed in in the material operated upon by the cutting operation of the preceeding cutting mechanism, means 

